<template>
	<view>
		<view class="search-container" :style="{'background-color':bgColor}">
			<uni-search-bar :radius="100" @confirm="search" cancelButton="none" :focus="true" @input="input">
			</uni-search-bar>
		</view>

		<!-- 搜索建议 -->
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view class="sugg-item" v-for="(item,i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
				<view class="goods-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>

		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
			</view>
			<!-- 列表区域 -->
			<view class="history-list">
				<uni-tag :text="item" v-for="(item, i) in historyList" :key="i" ></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		props: {
			bgColor: {
				type: String,
				default: '#2C405A'
			},
		},
		data() {
			return {
				keyWord: '',
				timer: null,
				searchResults: [],
				historyList: []
			};
		},
		methods: {
			input(e) {
				clearTimeout(this.timer)
				this.timer = setTimeout(() => {
					this.keyWord = e.trim()
					this.getSearchList()

				}, 700)
			},
			async getSearchList() {
				if (this.keyWord === '') {
					return this.searchResults = []
				}

				const {
					data: res
				} = await uni.$http.get('api/public/v1/goods/qsearch', {
					query: this.keyWord
				})
				if (res.meta.status !== 200) return uni.$showMsg()
				this.searchResults = res.message

			},

			gotoDetail(id) {
				uni.navigateTo({
					url: "/subpkg/goods_detail/goods_detail?goods_id=" + id
				})
				this.saveSearchHistory()
			},

			saveSearchHistory() {
				const set = new Set(this.historyList)
				// 让最近搜索的内容提前
				set.delete(this.keyWord)
				set.add(this.keyWord)

				this.historyList = Array.from(set).reverse()

				uni.setStorageSync('historyList', JSON.stringify(this.historyList));
			},

			cleanHistory() {
				this.historyList = []
				uni.removeStorageSync('historyList')
			},

			gotoGoodsList(item) {
				console.log(item)
			}
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('historyList') || ' []')
		}
	}
</script>

<style lang="less" scoped>
	.sugg-list {
		padding: 0 5px;

		.sugg-item {
			font-size: 12px;
			padding: 13px 0;
			border-bottom: 1px solid #efefef;
			display: flex;
			align-items: center;
			justify-content: space-between;

			.goods-name {
				// 文字不允许换行（单行文本）
				white-space: nowrap;
				// 溢出部分隐藏
				overflow: hidden;
				// 文本溢出后，使用 ... 代替
				text-overflow: ellipsis;
				margin-right: 3px;
			}
		}
	}


	.history-box {
		padding: 0 5px;

		.history-title {
			display: flex;
			justify-content: space-between;
			align-items: center;
			height: 40px;
			font-size: 13px;
			border-bottom: 1px solid #efefef;
		}

		.history-list {
			display: flex;
			flex-wrap: wrap;

			uni-tag {
				margin-top: 5px;
				margin-right: 5px;
			}
		}
	}
</style>
